IBlob class

IBlob class

A Blob object refers to a byte sequence, and has a size attribute which is the total number of bytes in the byte sequence, and a type attribute, which is an ASCII-encoded string in lower case representing the media type of the byte sequence.

The IBlob type exposes the following members:

Properties

PropertyDescription
sizeReturns the size of the byte sequence in number of bytes.
On getting, conforming user agents must return the total number of bytes that can be read by a FileReader
or FileReaderSync object, or 0 if the Blob has no bytes to be read.
typeThe ASCII-encoded string in lower case representing the media type of the Blob.
On getting, user agents must return the type of a Blob as an ASCII-encoded string in lower case,
such that when it is converted to a byte sequence, it is a parsable MIME type,
or the empty string – 0 bytes – if the type cannot be determined.

Methods

MethodDescription
sliceReturns a new Blob object with bytes ranging from the optional start parameter up to but not including the optional end parameter,
and with a type attribute that is the value of the optional contentType parameter.

See Also

FileCreateStreamProvider class ICreateStreamProvider class